main {
    display: flex;
    flex: 1;
}

.chat-app {
    display: flex;
    width: 100%;
    margin: 124px 0 24px 0;
    height: calc(100vh - 148px);
    gap: 16px;
    padding: 0 24px;
}

.chat-rail {
    width: 240px;
    flex-shrink: 0;
    background: rgba(18, 18, 18, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    border-radius: 20px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-rail-title {
    color: var(--accent-text);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    opacity: 0.7;
    padding: 4px 8px 8px 8px;
}

.assistant-tile {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    text-align: left;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    padding: 12px;
    cursor: pointer;
    color: var(--accent-text);
    transition: all 0.25s ease;
}

.assistant-tile:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(var(--accent-rgb), 0.25);
}

.assistant-tile.is-active {
    background: rgba(var(--accent-rgb), 0.1);
    border-color: rgba(var(--accent-rgb), 0.5);
    box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.15);
}

.assistant-tile.is-igniting {
    animation: neonIgnite 0.6s ease;
}

@keyframes neonIgnite {
    0%   { box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0); }
    35%  { box-shadow: 0 0 18px 2px rgba(var(--accent-rgb), 0.55); }
    100% { box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.15); }
}

.assistant-icon {
    font-size: 20px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
}

.assistant-tile.is-active .assistant-icon {
    background: rgba(var(--accent-rgb), 0.18);
}

.assistant-meta {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.assistant-meta strong {
    color: #fff;
    font-size: 14px;
}

.assistant-meta small {
    color: var(--accent-text);
    font-size: 12px;
    opacity: 0.75;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-new-btn {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    background: transparent;
    border: 1px dashed rgba(var(--accent-rgb), 0.35);
    color: var(--accent-text);
    border-radius: 12px;
    padding: 10px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.chat-new-btn:hover {
    background: rgba(var(--accent-rgb), 0.08);
    color: #fff;
}

.chat-rail-toggle {
    display: none;
    margin-top: auto;
    background: none;
    border: none;
    color: var(--accent-text);
    cursor: pointer;
    align-self: flex-end;
    padding: 8px;
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: rgba(18, 18, 18, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: 20px;
    overflow: hidden;
}

.chat-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.chat-topbar-icon {
    font-size: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(var(--accent-rgb), 0.15);
}

.chat-topbar-meta { display: flex; flex-direction: column; }
.chat-topbar-meta strong { color: #fff; font-size: 15px; }
.chat-topbar-meta small { color: var(--accent-text); font-size: 12px; opacity: 0.75; }

.chat-thread {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.chat-empty-state {
    margin: auto;
    text-align: center;
    max-width: 440px;
    padding: 20px;
}

.empty-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.chat-empty-state h2 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 8px;
}

.chat-empty-state p {
    color: var(--accent-text);
    font-size: 14px;
    opacity: 0.85;
    line-height: 1.5;
    margin-bottom: 20px;
}

.chat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.suggestion-chip {
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.25);
    color: var(--accent-text);
    border-radius: 20px;
    padding: 8px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.suggestion-chip:hover {
    background: rgba(var(--accent-rgb), 0.16);
    color: #fff;
}

.chat-msg {
    display: flex;
    max-width: 78%;
}

.chat-msg.from-user { align-self: flex-end; }
.chat-msg.from-assistant { align-self: flex-start; }

.chat-msg-bubble {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.55;
    white-space: pre-wrap;
}

.chat-msg.from-user .chat-msg-bubble {
    background: linear-gradient(135deg, var(--accent-dark), var(--accent-main));
    color: #fff;
    border-bottom-right-radius: 4px;
}

.chat-msg.from-assistant .chat-msg-bubble {
    background: rgba(255, 255, 255, 0.06);
    color: #e8e8e8;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom-left-radius: 4px;
}

.chat-typing {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 24px 10px 24px;
    color: var(--accent-text);
    font-size: 12px;
    opacity: 0.8;
    flex-shrink: 0;
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-main);
    animation: typingBounce 1.1s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
    30% { transform: translateY(-4px); opacity: 1; }
}

.chat-composer {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.chat-composer textarea {
    flex: 1;
    resize: none;
    max-height: 140px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 12px 14px;
    color: #fff;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
}

.chat-composer textarea:focus {
    outline: none;
    border-color: rgba(var(--accent-rgb), 0.5);
}

.chat-composer textarea::placeholder { color: rgba(255, 255, 255, 0.35); }

.chat-send-btn {
    width: 42px;
    padding: 0;
    flex-shrink: 0;
}

.chat-disclaimer {
    text-align: center;
    font-size: 11px;
    color: var(--accent-text);
    opacity: 0.55;
    padding: 0 20px 14px 20px;
    flex-shrink: 0;
}

.chat-disclaimer a {
    color: var(--accent-text);
    text-decoration: underline;
    opacity: 0.9;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
    .chat-app {
        margin-top: 92px;
        height: calc(100vh - 116px);
        padding: 0 12px;
        gap: 10px;
    }

    .chat-rail {
        position: fixed;
        left: 12px;
        bottom: 12px;
        top: 92px;
        z-index: 500;
        transform: translateX(-115%);
        transition: transform 0.3s ease;
    }

    .chat-rail.is-open { transform: translateX(0); }

    .chat-rail-toggle { display: flex; align-items: center; justify-content: center; }

    .chat-topbar-icon,
    .chat-topbar { position: relative; }

    .chat-topbar::before {
        content: '';
        position: absolute;
        inset: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .assistant-tile.is-igniting,
    .typing-dot {
        animation: none !important;
    }
}